1. Requirement,requisite refer to that which is necessary. A requirement is some quality or performance demanded of a person in accordance with certain fixed regulations: requirements for admission to college. A requisite is not imposed from outside; it is a factor which is judged necessary according to the nature of things, or to the circumstances of the case: Efficiency is a requisite for success in business.Requisite may also refer to a concrete object judged necessary: the requisites for perfect grooming.2. order, command, injunction, directive, demand, claim.

requirement

n.

1520s, "request, requisition," from require + -ment. Meaning "things required, a need" is from 1660s. Meaning "that which must be accomplished, necessary condition" is from 1841. Related: Requirements.